Ionic Charges and Naming Unit 2 Notes. Ionic Charges of the Elements Elements in the same group of the periodic table have similar properties. – Example:

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Presentation on theme: "Ionic Charges and Naming Unit 2 Notes. Ionic Charges of the Elements Elements in the same group of the periodic table have similar properties. – Example:"— Presentation transcript:

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Metal Ions Refer to table 5.3 (pg. 120) for ions formed by metals. Metals with more than one common ion use roman numerals when naming. – Example: Cu + and Cu 2+ ions are called Copper(I) and Copper(II) ions. The Roman numeral represents the charge of the ion. (remember, subscripts represent how many, not necessarily the charge)

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Combining Ions When two ions combine the sums of the charges of each ion determines the overall charge of the polyatomic ion. – Example: H + + CO 3 2- The polyatomic ion is written as HCO 3 - because the one extra proton the Hydrogen ion combined with the two extra electrons of the carbonate ion results in an overall negative charge (1 more electron than protons).

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Binary Molecular Compounds Ionic charges are not used Use prefixes – The names of all binary compounds (both ionic and molecular) end in ide. It is important to know if the elements are nonmetals or metals – Example 9 (pg. 131) – Practice problems 25 & 26 (pg. 132)